human 226 Humans 177 Technology: general issues 172 TK Electrical engineering. Electronics Nuclear engineering 167 female 140 male 139 History of engineering and technology 137 article 111 Article 108 COVID-19 98 Female 98 adult 98 Research & information: general 95 Male 91 controlled study 89 TJ Mechanical engineering and machinery 81 QC Physics 64 Physics 63 Adult 54 TA Engineering (General). Civil engineering (General) 49 major clinical study 48 SARS-CoV-2 47 physiology 45 History of engineering & technology 44 adolescent 43 middle aged 41 Millimeter waves 40 human experiment 40 aged 37 Middle Aged 36